Aceto L, Fokkink WJ, Ingólfsdóttir A, Luttik B. CCS with Hennessy’s Merge has no Finite Equational Axiomatization. BRICS [Internet]. 6. november 2003 [henvist 19. december 2025];10(34). Tilgængelig hos: https://tidsskrift.dk/brics/article/view/21802